Interesting, I would have thought new routes would focus on Houston's immediate catchment area, routes for which IAH is best suited to capture new connecting flows for UA's network.
I think IAH serves two main purposes in UA's network, US to Latin America and east/west in the South and Gulf Coast area. Domestic expansion in Florida could feed resumptions in smaller Texas markets, and with United's statements that domestic travel is more profitable than international, Houston, Denver, and Chicago, all mid-continent hubs, would be best placed to grow UA's underwhelming domestic presence (for its size).
Memphis at only 4 regional jets a day? MEM-IAH-beyond would be a great option for many passengers, but UA doesn't have enough connecting seats to connect passengers onto (a problem at all of its hubs).
I could become the LH617 of IAH and United, and complain, but UA does seem to have shrunk in IAH since the merger.
What they should do is grow around 20% domestically, growing ORD to 70,000 daily seats, IAH to 65,000, and DEN 50,000.
Specifically in Houston, they should add.
Key West: 3x week E170
San Angelo: 13x week E145
Wichita Falls: 13x week E145
Waco: 20x week E145
Madison: 6x week CRJ700
Evansville: Daily E145
Increasing popular destinations like LAS, PHX, LAX, and Florida from IAH (and other hubs) on efficient narrowbodies like the 737-10 ( I still wish they had chosen the A321 though) will boost connecting traffic to small (currently AA monoply) markets, and grow the hub in a virtuous cycle.
Florida traffic is a huge component of most airport's O/D yet United has a very small presence in Florida, behind JetBlue and maybe even Spirit. Houston is the perfect hub domestically to serve connections from much of the west to Florida, and there seem to be opportunities in markets like Fort Myers (served only once daily this summer, or the Gulf Coast, in Houston's shadow geographically).
Mainline RONs anyone to MEM, ELP, ABQ, TUL...? Grow in nearby destinations and gain buisness share to become the airline of choice for the region.
Growth, but still, UA knows the demand better than I do, MUCH BETTER
UA DL LH NW AA WN - Hope I don't have to leave WY for a while
"Born in Wonder, Brought to Wisdom"